1#ifndef __ASM_APIC_H 2#define __ASM_APIC_H 3 4#include <linux/pm.h> 5#include <linux/delay.h> 6#include <asm/fixmap.h> 7#include <asm/apicdef.h> 8#include <asm/processor.h> 9#include <asm/system.h> 10 11#define Dprintk(x...) 12 13/* 14 * Debugging macros 15 */ 16#define APIC_QUIET 0 17#define APIC_VERBOSE 1 18#define APIC_DEBUG 2 19 20extern int apic_verbosity; 21 22/* 23 * Define the default level of output to be very little 24 * This can be turned up by using apic=verbose for more 25 * information and apic=debug for _lots_ of information. 26 * apic_verbosity is defined in apic.c 27 */ 28#define apic_printk(v, s, a...) do { \ 29 if ((v) <= apic_verbosity) \ 30 printk(s, ##a); \ 31 } while (0) 32 33 34extern void generic_apic_probe(void); 35 36#ifdef CONFIG_X86_LOCAL_APIC 37 38/* 39 * Basic functions accessing APICs. 40 */ 41#ifdef CONFIG_PARAVIRT 42#include <asm/paravirt.h> 43#else 44#define apic_write native_apic_write 45#define apic_write_atomic native_apic_write_atomic 46#define apic_read native_apic_read 47#define setup_boot_clock setup_boot_APIC_clock 48#define setup_secondary_clock setup_secondary_APIC_clock 49#endif 50 51static __inline fastcall void native_apic_write(unsigned long reg, 52 unsigned long v) 53{ 54 *((volatile unsigned long *)(APIC_BASE+reg)) = v; 55} 56 57static __inline fastcall void native_apic_write_atomic(unsigned long reg, 58 unsigned long v) 59{ 60 xchg((volatile unsigned long *)(APIC_BASE+reg), v); 61} 62 63static __inline fastcall unsigned long native_apic_read(unsigned long reg) 64{ 65 return *((volatile unsigned long *)(APIC_BASE+reg)); 66} 67 68void apic_wait_icr_idle(void); 69unsigned long safe_apic_wait_icr_idle(void); 70int get_physical_broadcast(void); 71 72#ifdef CONFIG_X86_GOOD_APIC 73# define FORCE_READ_AROUND_WRITE 0 74# define apic_read_around(x) 75# define apic_write_around(x,y) apic_write((x),(y)) 76#else 77# define FORCE_READ_AROUND_WRITE 1 78# define apic_read_around(x) apic_read(x) 79# define apic_write_around(x,y) apic_write_atomic((x),(y)) 80#endif 81 82static inline void ack_APIC_irq(void) 83{ 84 /* 85 * ack_APIC_irq() actually gets compiled as a single instruction: 86 * - a single rmw on Pentium/82489DX 87 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC) 88 * ... yummie. 89 */ 90 91 /* Docs say use 0 for future compatibility */ 92 apic_write_around(APIC_EOI, 0); 93} 94 95extern int lapic_get_maxlvt(void); 96extern void clear_local_APIC(void); 97extern void connect_bsp_APIC (void); 98extern void disconnect_bsp_APIC (int virt_wire_setup); 99extern void disable_local_APIC (void); 100extern void lapic_shutdown (void); 101extern int verify_local_APIC (void); 102extern void cache_APIC_registers (void); 103extern void sync_Arb_IDs (void); 104extern void init_bsp_APIC (void); 105extern void setup_local_APIC (void); 106extern void init_apic_mappings (void); 107extern void smp_local_timer_interrupt (void); 108extern void setup_boot_APIC_clock (void); 109extern void setup_secondary_APIC_clock (void); 110extern int APIC_init_uniprocessor (void); 111 112extern void enable_NMI_through_LVT0 (void * dummy); 113 114#define ARCH_APICTIMER_STOPS_ON_C3 1 115 116extern int timer_over_8254; 117extern int local_apic_timer_c2_ok; 118 119#else /* !CONFIG_X86_LOCAL_APIC */ 120static inline void lapic_shutdown(void) { } 121 122#endif /* !CONFIG_X86_LOCAL_APIC */ 123 124#endif /* __ASM_APIC_H */ 125